পরিমাণগত পরিসংখ্যানের উপর ভিত্তি করে ডাবল স্ট্যান্ডার্ড বিচ্যুতি গতিশীল VWAP শক ব্রেকথ্রু ট্রেডিং কৌশল

/*backtest
start: 2019-12-23 08:00:00
end: 2025-01-04 08:00:00
period: 1d
basePeriod: 1d
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=5 
strategy("VWAP Stdev Bands Strategy (Long Only)", overlay=true)

// Standard Deviation Inputs
devUp1 = input.float(1.28, title="Stdev above (1)")
devDn1 = input.float(1.28, title="Stdev below (1)")

// Show Options
showPrevVWAP = input(false, title="Show previous VWAP close?")
profitTarget = input.float(2, title="Profit Target ($)", minval=0) // Profit target for closing orders
gapMinutes = input.int(15, title="Gap before new order (minutes)", minval=0) // Gap for placing new orders

// VWAP Calculation
var float vwapsum = na
var float volumesum = na
var float v2sum = na
var float prevwap = na // Track the previous VWAP
var float lastEntryPrice = na // Track the last entry price
var int lastEntryTime = na // Track the time of the last entry

start = request.security(syminfo.tickerid, "D", time)
newSession = ta.change(start)

vwapsum := newSession ? hl2 * volume : vwapsum[1] + hl2 * volume
volumesum := newSession ? volume : volumesum[1] + volume
v2sum := newSession ? volume * hl2 * hl2 : v2sum[1] + volume * hl2 * hl2

myvwap = vwapsum / volumesum
dev = math.sqrt(math.max(v2sum / volumesum - myvwap * myvwap, 0))

// Calculate Upper and Lower Bands
lowerBand1 = myvwap - devDn1 * dev
upperBand1 = myvwap + devUp1 * dev

// Plot VWAP and Bands with specified colors
plot(myvwap, style=plot.style_line, title="VWAP", color=color.green, linewidth=1)
plot(upperBand1, style=plot.style_line, title="VWAP Upper (1)", color=color.blue, linewidth=1)
plot(lowerBand1, style=plot.style_line, title="VWAP Lower (1)", color=color.red, linewidth=1)

// Trading Logic (Long Only)
longCondition = close < lowerBand1 and close[1] >= lowerBand1 // Price crosses below the lower band

// Get the current time in minutes
currentTime = timestamp("GMT-0", year(timenow), month(timenow), dayofmonth(timenow), hour(timenow), minute(timenow))

// Check if it's time to place a new order based on gap
canPlaceNewOrder = na(lastEntryTime) or (currentTime - lastEntryTime) >= gapMinutes * 60 * 1000

// Close condition based on profit target
if (strategy.position_size > 0)
    if (close - lastEntryPrice >= profitTarget)
        strategy.close("B")
        lastEntryTime := na // Reset last entry time after closing

// Execute Long Entry
if (longCondition and canPlaceNewOrder)
    strategy.entry("B", strategy.long)
    lastEntryPrice := close // Store the entry price
    lastEntryTime := currentTime // Update the last entry time

    // Add label for the entry
    label.new(bar_index, close, "B", style=label.style_label_down, color=color.green, textcolor=color.white, size=size.small)

// Optional: Plot previous VWAP for reference
prevwap := newSession ? myvwap[1] : prevwap[1]
plot(showPrevVWAP ? prevwap : na, style=plot.style_circles, color=close > prevwap ? color.green : color.red)